Tool for handling forcings



(No Model.)

v "E. KERR. TOOL FOR HANDLING PORGINGS, INGOTS, &-.c. No. 352.696;

MW @bmx. mil/m Patented Nov. '16, 1886.

llNiTno STATES PATENT OFFICE;

EDWARD KERR, orrrrrsnune, PENNSYLVANIA.

TOOL FOR HANDLING Foaemes, INGOTS, 800.

SPECIFICATION forming part of Letters Patent N 0. 352,696, dated November 16, 1886,

Application filed Septrmber 1, 1886. Serial No. 212,348. (No model.)

To all whom it may concern: Be it known that I, EDWARD KERR, a subj ect of the Queen of Great Britain, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Tools for Handling Forgings, lngots, 850., of which improvements the following is a specification.

In the accompanyingdrawings, which make part of this specification, Figure 1 is a view in side elevation of my improved tongs for handling ingots and other large articles during the operation of forging the same. Fig. 2 is a view of the tongs, partly in section and partly in side elevation. Fig. 3 is a front end view of the tongs. Fig. 4 is a transverse section on the line w m, Fig. 1.

The invention herein relates to certain im- '30 provements in tools or apparatus for handling large ingots or fo'rgin'gs during the working of the same under a stean1hammer.

In working large forgings or ingots it is customary to clamp two pieces of angle-iron at one end of the ingot or forging, a long piece of timber, usually termed a porter-bar, also being bolted, clamped, or otherwise secured between 'said angle-irons, the porter-bar serving, when thus secured, as ahandle for the manipulation 0 of the forging or ingot during the working 3 5 quired to. secure the porter-bar in place, a half of a day being frequently consumed in that operation. both ends of a forging require shaping under a hammer, thus necessitating not only a chang- 0 in g of the porter-bar from one end to the other,

but also a change in the shape of 'the ends of the angle-bars which are applied to the forging. v

The object of the invention is to provide a combined porter-bar 'and clamp which can be 5 readily and securely applied to an ingot or forging, the clamping portion of the device being capable of easy detachment from the porter-bar, whereby clamps having differentlyshaped jaws can be used in connection with a single porter-bar; and it is a further characteristic of the invention thatthe portion of the combined porter-bar and clamp which bears It is also frequently necessary thatupon the crane-chain used for supporting the forging is soshaped as to permit ofthe rotation of the porter-bar and forging through small ares, which movements cannot be readily effected with the device now in use on account of its angularity.

In general terms, the invention consists in the construction and combination of parts, s'ub-. stantially as hereinafter described and claimed.

The clamping part Ais shaped substantially similar to a pair of blacksmiths tongs, consisting of the two jaws l and 2 and the handles or reins 3 and 4, connected to the jaws and pivoted together near said jaws, as shown. The

jaws 1 and 2 are made of a size and strength suitable for handling heavy forgings, and are shaped in accordance with the contour of the forging to be operated on, in order to obtain a firm hold thereon; The reins 3 and 4 are of a corresponding size, and of such a length as to afford considerable leverage in closing the jaws, and also a comparatively .long bearing upon the porter-bar B. On the reins 3 and 4, at a suitable distance from their pivot, are formed bosses or projections 5 and '6, through which are formed holes, the hole in the boss 6 being threaded. A closing-screw, 7-, is passed through the hole in the boss 5 and screwed into the threaded opening in the boss 6, the screw being held as against longitudinal movement through the boss 5Jby collars 8, one of which 7 is formed on the screw, the other being shrunk or otherwise secured thereonafter the screw has been placed in position; The uuthreaded end of the screw 7 is provided with holes 9, for the insertion of a capstan-bar for the rotation of the screw in closing the jaws 1 and 2, and at the same time closing the reins into the porter-bar.

The porter-bar B is a round piece oftimber tapering toward its outer end, the size of said bar in cross-section and length being dependent upon the size of theforging to be handled. Along diametrically-opposite sides of the bar are formed grooves 10 for the reception of the reins 3 and 4, said grooves extending from the front or largeend for a'distance equal to the length of the reins, as shown. The porter-bar is arranged between the reins 3 and 4, its front end being in closeproximityto their pivotpoint, in order that when the reins are drawn toward each other by the screw, which also IOC passes through the porter-bar, said reins will have a bearing on the bottoms of the grooves 10 for nearly their entire length. The reins are made sufficiently elastic so as to be capable of being sprung down into the grooves by the action of the screw, even when the jaws are closed onto quite large forging, such construction insuring not only the entrance of the reins into the grooves 10, but also a firm grasp by thejaws on the ingot or forging.

In order to protect the porter-bar from injury by heat or otherwise. itis covered throughout its entiresurface with sheet-iron, as shown. It will be observed that when the reins have been closed into the grooves of the bar the clamp and bar form practically one structure, and that the combined tool at the pointwhereit bears upon the crane'chain is practically round, thereby permitting of the easy rotation of the tool and forging through a small are of a circle, and consequently the production of shapes under the hammer almostimpossible with i119 crude device now in use for handling forgings. A series of tongs or clamping devices having 25 jaws differing in shape and size may be used in connection with a single bar, thereby in creasing the utility of the tool.

I claim herein as my invention- 1. The combination of a pair of'clampingjaws operated by reins or handles, a porterbar arranged between said reins, and means for securing the reins and porter-bar together, substantially as set forth. J

2. The combination of a pair of clampingjaws and their reins or handles, a porter-bar arranged between the reins, and a screw for closing thejaws and clamping the reins upon the porter-bar, substantially as set forth.

3. The combination of a pair of clampingjaws and their operating reins or handles, a porter-bar having longitudinal grooves in opposite sides, and means for simultaneously closing the jaws and forcing the reins into the grooves in the porter-bar, substantially as set forth.

In testimony whereof I have hereunto set my hand.

EDWARD KERR.

\Vitnesses:

THOMAS MGGAFFREY, DARWIN S. WOLOOTT. 

